refactor: Cleanup git state - commit all staged changes

Major refactoring cleanup:
- Add new controller architecture (class-controller-*.php)
- Add new settings-v2 UI (views/settings-v2/)
- Add new CSS architecture (agentic-sidebar.css, tokens)
- Add esbuild build pipeline (scripts/build.js, package.json)
- Add composer dependencies (vendor/)
- Add frontend src directory (assets/js/src/index.jsx)
- Add documentation files
- Remove old/obsolete files (class-settings.php, old CSS)

This commits all pending changes from previous refactoring efforts.

vendor/phpdocumentor/guides/resources/template/tex/body/anchor.tex.twig

@@ -0,0 +1 @@
+\label{{ '{' }}{{ node.value }}{{ '}' }}

vendor/phpdocumentor/guides/resources/template/tex/body/code.tex.twig

@@ -0,0 +1,4 @@
+\lstset{language={{ node.language }}{{ '}'}}
+\begin{lstlisting}
+{{ node.value|raw }}
+\end{lstlisting}

vendor/phpdocumentor/guides/resources/template/tex/body/image.tex.twig

@@ -0,0 +1 @@
+\includegraphics{{ '{' }}{{ node.url }}{{ '}' }}

vendor/phpdocumentor/guides/resources/template/tex/body/list/list-item.tex.twig

@@ -0,0 +1 @@
+\item {{ text|raw }}

vendor/phpdocumentor/guides/resources/template/tex/body/list/list.tex.twig

@@ -0,0 +1,12 @@
+{% set keyword = 'itemize' %}
+
+{% if node.isOrdered %}
+    {% set enumerate = 'ol' %}
+{% endif %}
+
+
+\begin{{ '{' }}{{ keyword }}{{ '}' }}
+    {% for item in node.items %}
+        {{ renderNode(item) }}
+    {% endfor %}
+\end{{ '{' }}{{ keyword }}{{ '}' }}

vendor/phpdocumentor/guides/resources/template/tex/body/paragraph.tex.twig

@@ -0,0 +1,5 @@
+{%- set text = renderNode(node.value) -%}
+
+{%- if text|trim %}
+    {{- text|raw -}}
+{% endif -%}

vendor/phpdocumentor/guides/resources/template/tex/body/quote.tex.twig

@@ -0,0 +1,3 @@
+\begin{quotation}
+{{ renderNode(node.value) }}
+\end{quotation}

vendor/phpdocumentor/guides/resources/template/tex/body/separator.tex.twig

@@ -0,0 +1 @@
+\ \

vendor/phpdocumentor/guides/resources/template/tex/body/toc/toc.tex.twig

@@ -0,0 +1,4 @@
+\tableofcontents
+{% for tocItem in tocItems %}
+\input{{ '{' }}{{ tocItem.url }}{{ '}' }}
+{% endfor %}